Noi a me ka Ikepili o ASTM A1045 Structural Steel Pipe

ASTM A1045 Paipu kila kilapili i ka mea o ka paipu kila seamless.Hoʻokaʻawale ʻia ka paipu kila seamless i GB8162 a me GB8163, ʻelua mau mea maʻamau i hoʻohana ʻia ma Kina.Eia nō naʻe, ʻo ASTM A1045Paipu kila kilahe GB8162 wale nō, he mea maʻamau i hoʻohana ʻia no ka mīkini.

ʻO ka paipu kila ASTM A1045 ka mea maʻamau i hoʻohana ʻia ma waena o ka carbon quenched a me ka tempered steel pipe me nā waiwai mechanical piha maikaʻi, haʻahaʻa paʻakikī a maʻalahi hoʻi e haki i ka wā e hoʻopau ai i ka wai.Pono e hoʻopau ʻia nā ʻāpana liʻiliʻi a hoʻomāliʻi ʻia, a pono e hoʻomaʻamaʻa ʻia nā ʻāpana nui, e hoʻohana nui ʻia e hana i nā ʻāpana neʻe ikaika kiʻekiʻe, e like me ka turbine impeller a me ka piston compressor.ʻO ka lāʻau, ka pahu, ka pahu, ka ilo, etc.

ASTM1045 paipu kila kalaponaaia ma kahi o 0.45% kalapona, kahi liʻiliʻi o ka manganese, silicon, a me nā mea ʻē aʻe, a me kahi ʻano sulfur haʻahaʻa a me ka phosphorus o ka paipu kila structural carbon kiʻekiʻe.

ʻO ka mahana wela wela: hoʻomaʻamaʻa i ka 850, hoʻopau i ka 840, hoʻoheheʻe 600. ʻO ke kila ASTM1045 he kila kila kila kiʻekiʻe me ka paʻakikī haʻahaʻa a maʻalahi ke ʻoki.Hoʻohana pinepine ʻia ka ʻōpala e like me nā templates, nā pine, nā pou alakaʻi, a me nā mea ʻē aʻe, akā pono e mālama ʻia ka wela.1. Ua kūpono ke kila ASTM1045 inā ʻoi aku kona paʻakikī ma mua o HRC55 (a hiki i ka HRC62) ma hope o ke kinai ʻana a ma mua o ka hoʻoulu ʻana.ʻO ka paʻakikī kiʻekiʻe loa i ka hoʻohana pono ʻana ʻo HRC55 (kiʻekiʻe-frequency quenching HRC58).2. ʻAʻole e hoʻohana ʻia ke kaʻina hana wela o ka carburizing a me ke kinai ʻana no ke kila ASTM1045.Loaʻa i nā ʻāpana i hoʻopau ʻia a i hoʻonāuki ʻia nā ʻāpana mechanical piha maikaʻi a hoʻohana nui ʻia i nā ʻāpana koʻikoʻi koʻikoʻi, ʻoi aku ka nui o nā lāʻau hoʻohui, bolts, gears a me nā shafts e hana ana ma lalo o nā ukana hoʻololi.Eia nō naʻe, haʻahaʻa ka paʻakikī o ka ʻili a ʻaʻole ia e pale i ka lole.Hiki ke hoʻomaikaʻi ʻia ka paʻakikī o nā ʻāpana e ka hoʻopau ʻana a me ka hoʻoulu ʻana i ka ʻili.Hoʻohana maʻamau ka mālama ʻana i ka carburizing no nā ʻāpana haʻahaʻa kaumaha me ka pale ʻana i ka abrasion a me ke kūpaʻa hopena koʻikoʻi, a ʻoi aku ka kiʻekiʻe o kona kūpaʻa abrasion ma mua o ka quenching and tempering + surface quenching.ʻO 0.8-1.2% kona ʻano kalapona, a ʻo kona kumu maʻamau he 0.1-0.25% (0.35% i nā hihia kūikawā).Ma hope o ka hoʻomaʻamaʻa ʻana i ka wela, hiki i ka ʻili ke loaʻa ka paʻakikī kiʻekiʻe loa (HRC58-62), a he haʻahaʻa haʻahaʻa ka paʻakikī a me ke kūpaʻa hopena.Inā hoʻohana ʻia ke kila ASTM1045 no ka carburizing, ʻike ʻia ka martensite paʻakikī a me ka brittle i ke kumu ma hope o ke kinai ʻana, e nalowale ana nā pono o ka mālama carburizing.I kēia manawa, ʻaʻole kiʻekiʻe ka ʻike kalapona o nā mea e hoʻohana ana i ke kaʻina hana carburizing, a hiki i ka ikaika kumu ke piʻi kiʻekiʻe loa e 0.30%, he mea maʻamau i ka noi.0.35% ʻaʻole i ʻike i kekahi laʻana, a hoʻokomo wale ʻia i loko o nā puke.Hiki ke hoʻohana ʻia ke kaʻina hana o ka quenching a me ka tempering + kiʻekiʻe-frequency surface quenching, a ʻoi aku ka maikaʻi o ka pale ʻana ma mua o ka carburizing.ʻO ka ʻōnaehana hoʻomaʻamaʻa wela i manaʻo ʻia no 45 kila i kuhikuhi ʻia ma GB / T699-1999 maʻamau ʻo 850 ℃ normalizing, 840 ℃ quenching a me 600 ℃ tempering.ʻO nā waiwai i loaʻa ʻo ia ka ikaika o ka hoʻoulu ʻana he ≥ 355MPa.ʻO ka ikaika tensile o 45 kila i hōʻike ʻia ma GB / T699-1999 maʻamau ʻo 600MPa, ʻo ka ikaika o ka hoʻoulu ʻana he 355MPa, ʻo ka elongation he 16%, ʻo ka hoʻemi ʻana o ka wahi he 40%, a ʻo ka ikaika hopena he 39J.